ICEF2011-60167 Assessment of Residual Mass Estimation Methods for Cylinder Pressure Heat Release Analysis of HCCI Engines with Negative Valve Overlap

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F11%3A00189528" target="_blank" >RIV/68407700:21220/11:00189528 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/ICEF2011-60167" target="_blank" >http://dx.doi.org/10.1115/ICEF2011-60167</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/ICEF2011-60167" target="_blank" >10.1115/ICEF2011-60167</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ICEF2011-60167 Assessment of Residual Mass Estimation Methods for Cylinder Pressure Heat Release Analysis of HCCI Engines with Negative Valve Overlap

Popis výsledku v původním jazyce

Increased residual levels in Homogeneous Charge Compression Ignition (HCCI) engines employing valve strategies such as recompression or negative valve overlap (NVO) imply that accurate estimation of residual gas fraction (RGF) is critical for cylinder pressure heat release analysis. The objective of the present work was to evaluate three residual estimation methods and assess their suitability under naturally aspirated and boosted HCCI operating conditions: i) the Simple State Equation method employs the Ideal Gas Law at exhaust valve closing (EVC); ii) the Mirsky method assumes isentropic exhaust process; and iii) the Fitzgerald method models incylinder temperature from exhaust valve opening (EVO) to EVC by accounting for heat loss during the exhaustprocess and uses measured exhaust temperature for calibration.

Název v anglickém jazyce

ICEF2011-60167 Assessment of Residual Mass Estimation Methods for Cylinder Pressure Heat Release Analysis of HCCI Engines with Negative Valve Overlap

Popis výsledku anglicky

Increased residual levels in Homogeneous Charge Compression Ignition (HCCI) engines employing valve strategies such as recompression or negative valve overlap (NVO) imply that accurate estimation of residual gas fraction (RGF) is critical for cylinder pressure heat release analysis. The objective of the present work was to evaluate three residual estimation methods and assess their suitability under naturally aspirated and boosted HCCI operating conditions: i) the Simple State Equation method employs the Ideal Gas Law at exhaust valve closing (EVC); ii) the Mirsky method assumes isentropic exhaust process; and iii) the Fitzgerald method models incylinder temperature from exhaust valve opening (EVO) to EVC by accounting for heat loss during the exhaustprocess and uses measured exhaust temperature for calibration.

Druh

D - Stať ve sborníku

CEP obor

JT - Pohon, motory a paliva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the ASME 2011 Internal Combustion Engine Division Fall Technical Conference

ISBN

978-0-7918-4442-7

ISSN

1066-5048

e-ISSN

—

Počet stran výsledku

10

Strana od-do

481-490

Název nakladatele

American Society of Mechanical Engineers - ASME

Místo vydání

New York

Místo konání akce

Morgantown

Datum konání akce

2. 10. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000322089700043